I don't know, I'm still fairly new to all of this. I was reacting to them so I did some searching and found articles like this one: http://www.glutenfreeislife.com/?p=6488
My understanding is that gluten free was gluten-free up to 20PPM, certified gluten free was gluten-free up to 10PPM and Celiac Sprue certified meant gluten free up to 5PPM.
My...